To construct a nonmechanical water meter, a 0.500-t magnetic field is placed across the pipe supplying water to a home, and the hall voltage between the ends of a pipe diameter perpendicular to the field is measured. this works, because water contains ions, which are charged particles and move at the flow speed of the water.
a) find the flow rate, in cubic meters per second, through a 2.4-cm diameter pipe if the hall voltage is 62.5 mv.
b) what would be the hall voltage, in volts, for the same flow rate through a 12.5-cm-diameter pipe with the same field applied?

the focus of lesson 1 is newton's first law of motion - sometimes referred to as the law of inertia. newton's first law of motion is often stated as. an object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

explanation:

answer would be letter choice (a),   a ball resting on a shelf. would be another example of potential energy   >   stored energy > not moving.

a ball spinning on a finger   >   kinetic energy > moving energy

a ball rolling on the ground   >   kinetic energy   > moving energy

a   ball flying through the air   > kinetic energy   >   moving energy

hope that                                         : )

the speed of the cart after 3 seconds of low fan speed is ⇒ 54.0 cm/s.

the speed of the cart after 5 seconds of medium fan speed is ⇒ 120.0 cm/s.

the speed of the cart after 2 seconds of high fan speed is ⇒ 64.0 cm/s. 

just did the lab.